CCS811 is an ultra-low power digital gas sensor for monitoring indoor air quality.
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Jul 22, 2021
Janice Daniell
CO2 & TVOC Measurement using CCS811 Air Quality Gas Sensor & Arduino
CCS811 is an ultra-low power digital gas sensor for monitoring indoor air quality. This article mainly covers pinout, datasheet, application, circuit and other details about CCS811.
CCS811
The CCS811 is an ultra-low power digital gas sensor solution which integrates a metal oxide (MOX) gas sensor to detect a wide range of Volatile Organic Compounds (VOCs) for indoor air quality monitoring with a microcontroller unit (MCU), which includes an Analog-to-Digital converter (ADC), and an I²C interface.
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ams CCS811 technical specifications, attributes, parameters and parts with similar specifications to ams CCS811.
ams CCS811 technical specifications, attributes, parameters and parts with similar specifications to ams CCS811.
| Product Attribute | Attribute Value | |
|---|---|---|
| Surface Mount | YES | |
| Operating Temperature (Max.) | 50°C | |
| Operating Temperature (Min.) | -5°C | |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) | |
| Number of Terminations | 10Terminations | |
| HTS Code | 8542.39.00.01 | |
| Terminal Position | BOTTOM |
| Product Attribute | Attribute Value | |
|---|---|---|
| Terminal Form | BUTT | |
| Peak Reflow Temperature (Cel) | NOT SPECIFIED | |
| Number of Functions | 1Function | |
| Terminal Pitch | 0.6mm | |
| Time@Peak Reflow Temperature-Max (s) | NOT SPECIFIED | |
| JESD-30 Code | R-XBGA-B10 | |
| Supply Voltage-Max (Vsup) | 3.3V |
| Product Attribute | Attribute Value | |
|---|---|---|
| Temperature Grade | COMMERCIAL | |
| Supply Voltage-Min (Vsup) | 1.8V | |
| Analog IC - Other Type | ANALOG CIRCUIT | |
| Length | 4mm | |
| Height Seated (Max) | 1.1mm | |
| Width | 2.7mm | |
| RoHS Status | Non-RoHS Compliant |
This device can be mainly used for indoor air quality monitoring in:
• Smart phones
• Wearables
• Home and Building automation
• Accessories
Although it can be used with other microcontrollers, we are explaining the connections of this module with Arduino to understand its working. If you are using this sensor for the first time after purchasing it, run the sensor for 48 hours to achieve a stable operation. During the first 48 hours, the change in resistance is higher due to its sensitivity changes. After that run it 20 minutes in any desired mode before using it.
It is an ultra-low-power, highly compact and economical digital sensor module which is compatible with Arduino and CircuitPython. You can use this sensor for monitoring indoor air quality. It can be used with CircuitPython board, computer, Arduino or any other microcontroller that requires 5V DC supply for operation. Due to its extended battery life, you can use it in portable devices like smartwatches, etc.
ams is a global leader in the design and manufacture of advanced sensor solutions. Their mission is to shape the world with sensor solutions by providing a seamless interface between humans and technology. ams focuses on sensor-rich market segments, providing high-performance sensor solutions and driving true leadership in three sensing areas: optical sensing, image sensing, and audio sensing. Headquartered in Austria, ams employs about 10,000 people globally and serves more than 8,000 customers worldwide. ams is listed on the SIX Swiss stock exchange (ticker symbol: AMS).
Download datasheets and manufacturer documentation for ams CCS811.
Download datasheets and manufacturer documentation for CCS811
The CCS811 has 5 modes of operation as follows
• Mode 0: Idle, low current mode
• Mode 1: Constant power mode, IAQ measurement every second
• Mode 2: Pulse heating mode IAQ measurement every 10 seconds
• Mode 3: Low power pulse heating mode IAQ measurement every 60 seconds
• Mode 4: Constant power mode, sensor measurement every 250ms
In Modes 1, 2, 3, the equivalent CO2 concentration (ppm) and TVOC concentration (ppb) is calculated for every sample.
• Mode 1 reacts fastest to gas presence, but has a higher operating current
• Mode 3 reacts more slowly to gas presence but has the lowest average operating current.
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